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Finding the Fourth Proportional to 644,430.10, 967,677.90 and 512,408.20

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Solution

The fourth proportional to 644,430.10, 967,677.90 and 512,408.20 is: 769,433.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,430.10 : 967,677.90 = 512,408.20 : x
  2. Step 2: Convert to fraction form
    644,430.10/967,677.90 = 512,408.20/x
  3. Step 3: Cross multiply
    644,430.10x = 967,677.90 × 512,408.20
  4. Step 4: Simplify right side
    644,430.10x = 495,846,090,918.78
  5. Step 5: Solve for x
    x = 495,846,090,918.78/644,430.10
  6. Step 6: Final answer
    x = 769,433.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.